Switch for iontophoresing cation and anion

Abstract

Disclosed is a novel switch for iontophoresing cation and anion, comprising an on/off switch for power circuit; a selector switch for reversing the output current from an iontophoretic low-frequency oscillator; and a rotary member actuating said on/off- and selector-switches when turned.

I claim: 
     
       1. A switch directed to use in a low-frequency oscillator to iontophorese 6-[2-[(5-bromo-2-pyridyl) amino] vinyl]-1-ethyl-2-picolinium iodide into the scalp, comprising: an on/off switch to control a power circuit of an iontophoretic low-frequency oscillator;   a selector switch to reverse an output current from said iontophoretic low-frequency oscillator in such manner that a positive potential and a negative potential energize an electrode containing 6-[2-[(5-bromo-2-pyridyl) amino] vinyl]-1-ethyl-2-picolinium iodine at a duration ratio of 1:2 or 1:3 during one selection cycle; and   a rotary member actuating said on/off- and selector-switches when turned.   
     
     
       2. The switch of claim 1, wherein said rotary member comprises a plurality of cam plate provided on a rotary shaft, said cam plates actuating sain on/off- and selector-switches when turned. 
     
     
       3. The switch of claim 1, wherein said rotary member comprises a rotary disc including a plurality of contact terminal radially provided on the surface of said rotary disc, said rotary disc actuating slidable pieces of said on/off- and selector-switches when turned, said slidable pieces being provided in contact with said rotary disc. 
     
     
       4. The switch of claim 1, wherein said rotary member comprises a rotary cylinder including a plurality of contact terminal provided on the circumferential surface of said rotary cylinder, said rotary cylinder actuating slidable pieces of said on/off- and selector-switches when turned, said slidable pieces being provided in contact with the circumferential surface of said rotary cylinder.